The Shelly Flood Gen4 detects leaks the moment they happen – so you can stop water damage before it gets bigger – with instant alerts directly to your mobile device or home automation system.
With its precise leak sensor cable and smart home compatibility, it offers an easy way to protect your property. Whether you’re a smart home user, a holiday homeowner, or managing multiple properties, this device lets you monitor and control leaks from anywhere.
Stay one step ahead of water damage and catch unexpected issues before they escalate. Delivers real-time alerts and fits perfectly into your smart home system. Ideal for basements, kitchens, garages, laundry rooms, holiday homes or any area at risk.
With support for Wi-Fi, Bluetooth and Zigbee, you can integrate it into a wide range of smart home systems without needing a hub – including Home Assistant!
- Flood & Rain Detection – Detects leaks, spills, or rainwater intrusion with instant alerts to your phone or home automation system
- Multiprotocol connectivity – Highly compatible! Choose the best protocol for your smart home – Wi-Fi, Bluetooth or Zigbee
- Extended Leak Sensor Cable – Monitor hard-to-reach places for broader coverage
- Battery-powered – Powered by 4x AA 1.5V (included) for reliable, low-maintenance protection
- Customizable Alert Modes – Choose from three smart alarm styles: Intense, Normal, and Economic
- Smart Scenes & Automation – Set automation scenarios, like turning off appliances, by combining Shelly Flood Gen4 with your other Shelly or third-party devices.
You may require a Zigbee gateway to use this device with Zigbee in your home automation system. Check out our Zigbee section for some great USB options, many of which are Raspberry Pi-compatible.
Shelly Gen4 device
Experience next-level smart home automation with Shelly Gen4. Each Gen4 device offers multi-protocol connectivity, featuring Wi-Fi, Bluetooth, Zigbee, and Matter. Choose your connection and set up your Shelly device to work with your preferred smart home network in no time.
Features
- New: Multiprotocol connectivity: Choose from Bluetooth, Wi-Fi or Zigbee
- Matter-certified: Integrates into any Matter ecosystem
- Leak detection: 2m extendable leak sensor cable for coverage in small and large areas
- Supports two modes: Flood Detection and Rain Detection
- Three built-in flood alarm modes: Intense, Normal, and Economic
- Battery-powered: For flexibility and uninterrupted operation, included in the pack
- Protection class IP44: Built tough with an IP44 environmental resistance design
- Smart automation: Supports local automation actions for independent operation
- Control from anywhere: Use the Shelly Smart Control App or your favourite automation platform.
- Works with all major systems: Apple HomeKit, Google Home, Home Assistant
Specifications
| Physical | |
| Size (HxWxD) | 97×76×25 mm |
| Weight | 91g (without batteries) 185g (with batteries) |
| Mounting | Wall |
| Shell material | Plastic |
| Shell color | White |
| Environmental | |
| Ambient working temperature | -20°C to 40°C |
| Humidity | 30% to 70% RH |
| Max. altitude | 2000m |
| Electrical | |
| Power supply | Batteries |
| Battery type | 4× AA 1.5 V |
| Estimated battery life | Approx. 2 years (depending on batteries used, device usage, and network connection strength) |
| Sensors, meters | |
| Leak sensor cable | 2 m, extendable (up to 150 m), attaches via designated port |
| Radio – Wi-Fi | |
| Protocol | 802.11 b/g/n/ax |
| RF band | 2401 – 2483 MHz |
| Max. RF power | < 20 dBm |
| Range | Up to 30m indoors and 50m outdoors (depends on local conditions) |
| Radio – Bluetooth | |
| Protocol | 5 (LE) |
| RF band | 2402 – 2480 MHz |
| Max. RF power | < 20 dBm |
| Range | Up to 10m indoors and 30m outdoors (depends on local conditions) |
| Radio – Zigbee | |
| Protocols | 802.15.4 |
| RF bands | 2405 – 2480 MHz |
| Max. RF power | < 20 dBm |
| Range | Up to 100m indoors and 300m outdoors (depends on local conditions) |
| Microcontroller unit | |
| CPU | ESP-Shelly-C68F |
| Flash | 8 MB |
| Firmware capabilities | |
| Schedules | No |
| Webhooks (URL actions) | 10 with 2 URLs per hook |
| Scripting | No |
| MQTT | Yes |
| UDP | Yes |
| KVS (Key-Value Store) | Yes |
Resources
- Shelly Product Documentation
- Printed User Guide (as found within the package)
- Components and APIs
- Declaration of Conformity
- Device Identification
- Device name: Shelly Flood Gen4
- Device model: S4SN-0071A
- Device SSID: ShellyFloodG4-XXXXXXXXXXXX
- Device Bluetooth ID: 0x1822
- EAN: 3800238071714
Handy Shelly Resources
- Shelly Cloud
- Shelly App
- Apple App Store
- Google Play
- Huawei AppGallery
- Home Assistant Shelly Integration
- Shelly Community Forum
- Shelly Facebook Support Group
- Shelly Knowledgebase
- Shelly Device Finder (easy-to-use software to find Shelly devices in the local network)
- Shelly Developer API
Package Contents
- 1x Shelly Flood Gen4 (4x AA batteries included)
- 1x User Guide



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